SEREN R301 - Page 39

R301 RF POWER SUPPLY OPERATOR’S MANUAL
PIN
SIGNAL NAME DESCRIPTION
7 GATE External Pulse Train input. Toggles output power between
setpoint value and 0 Watts. TTL - compatible input with internal
pull-up resistor.
An open circuit or TTL “high” signal applied to pin 7 holds the RF
output to the setpoint level.
A contact closure between pin 7 and pin 21 or a TTL ‘low” signal
applied to pin 7 switches the RF output power to 0 Watts.
Active when pin 6 (GATEN*) is in a TTL “low” state.
8 RFENABLED* RF output status signal. Active low, open collector output.
12VDC, 15mA maximum current sink, 150mW maximum power
dissipation.
Signal output is 0V (low) for an RF on condition; signal output is
“open” for an RF off condition.
The RFENABLED* signal can also indicate the presence of
excessive reflected power by changing from a “low” state to a
“high” state when the RF output is enabled. Refer to “Reflected
Power Alarm” in the Programmable Parameters section for
details.
The RFENABLED* output signal may also be used to pre-
position Seren IPS Inc. AT-Series Matching Networks. Refer to
“Matching Network Preset Mode”, “Tune Capacitor Preset
Position”, and “Load Capacitor Preset Position” in the
Programmable Parameters section.
Use pin 21 for a reference return.
9 GND Internally connected to chassis ground. Connect to system
controller common or ground reference.
10 FWD MON Forward power monitor output signal. Analog output, selectable
0 to +5VDC or 0 to +10VDC range via front panel controls.
Output is linearly proportional to 0 to 300 Watts of forward
power.
Output scaling is 5.0VDC at 300 Watts (16.66mV/Watt) or
10.0VDC at 300 Watts (33.33mv/Watt), depending on output
range selected. (Default scaling)
The forward power monitor output signal may also be used to
pre-position Seren IPS Inc. AT-Series Matching Networks.
Refer to “Matching Network Preset Mode”, “Tune Capacitor
Preset Position”, and “Load Capacitor Preset Position” in the
Programmable Parameters section.
Measure monitor voltage with respect to pin 22 (FWDRET).
11 REFP MON Reflected power monitor output signal. Analog output,
selectable 0 to +5VDC or 0 to +10VDC range via front panel
controls.
Output is linearly proportional to 0 to 100 Watts of forward
power.
Output scaling is 5.0VDC at 100 Watts (50mV/Watt) or 10.0VDC
at 100 Watts (100mv/Watt), depending on output range
selected. (Default scaling)
The reflected
p
ower monitor out
p
ut si
g
nal ma
y
also be used to
Page 38
Seren IPS Inc.
6100130000 Rev. 0.05